Water samples were
collected from three different locations along the Silver River, Bayelsa State
and were analyzed for the concentrations of selected heavy metals. This was
done with the aim to determine if the concentrations of the metals exceeded the
minimum requirement for drinking water by WHO. The result showed that the
examined metals; cadmium (Cd), lead (Pb), chromium (Cr), nickel (N), copper
(Cu), zinc (Zn), iron (Fe), manganese (Mn) and mercury (Hg) concentrations were
between 0.714±0.131-2.414±0.648, 1.742±0.214-3.812±1.136,
1.694±0.331-3.725±1.203, 0.443±0.06-2.717±0.782, 2.171±0.520-3.691±0.669,
5.167±2.063-8.239±2.411, 2.891±0.897-4.489±1.093, 0.349±0.062-2.891±1.033 and
0.0011±0.00-0.0024±0.00 mg/L respectively. All the values observed for the
individual heavy metals except Hg were higher than the WHO value for domestic
water. The contamination factor index analyzed from the concentrations of the
heavy metals showed different degrees or levels of contamination – pollution of
the water by the individual metals examined. Therefore, the water is not good
for human consumption. The government should make practicable efforts to stop
the input sources of these metals into the Silver River water body.
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